The calculated distance (air line) between Berdyansk and Primorsko-Akhtarsk is approximately 82 miles respectively 133 kilometers.
By car or train, the actual journey to Primorsko-Akhtarsk is certainly longer, as only the direct route (as the crow flies) between Berdyansk and Primorsko-Akhtarsk has been calculated here.
Air line (approximately)
133 kilometers
72 nautical miles